It is a PIR+MW dual technology detector with pet-immunity detection.Utilizing patent pending Target Size Verification (TSV) technology, this state-of-the-art dual technology motion detector is able to immune the detection of domestic pet up to 18 kgs (40 lb). This dual technology detector provides not only the highest detection not only the highest detection reliability, but also aethestically ple[..]

This small board has been designed to convert TTL (Transistor-Transistor Logic) level signals to RS-232 interface and vice versa. This allows the user to develop applications so that the board will act as an intermediate for the communication between the two devices that follows TTL and RS-232 standard. The TTL side is a 4-pin connector and the RS-232 side is a 9-pin female connector. if the board[..]

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Using oxygen recombination technology : maintainance free. PbCaSn alloy for plate grids: less gassing, less self-discharging. High quality AGM separtor: extend cycle life and prevent micro short circuit. ABS material : increase the strength of battery container. (flame-retardent ABS is optional). High purity raw material : ensure low self discharge rate. Silver-coated copper terminals (T1, T2[..]